I've had three Humax boxes and they've been great. I've just switched to Freesat but previously I had a Freeview PVR9200T which was great and worked well with bmy BV3 through the STB. Humax direct do some great 'manager special' grade A deals.
I think it could still bve worth buying a Freeview HD box and then either use a switching box into the DVI socket, or leave the HDMI output unused until future upgrades.